Printing-machine.



A. E. K. G. HARTMANN.

Patented Mar. 23, 1915.

THE NOREIS PETERS 60., PHOTOJJTHQ. WASHING TON. D. c.

aneusr ERNST KARL; eus'rnv HARTM'ANN',

oFHAM-BURG, GERMANY.

PRINTING-MACHINE.

1,1a2,ai4..

Specification of- Letters Patent.

Application filed January 28, 1915. Serial No. 4,?49.

T all'whomit may concern:

Be'it known I GUSTAV HARTMA'NN', a subject of the King ofP-russia and German Emperor, residing 'atJHamburg, Germany, have invented certain new and-useful Improvements in Pr nting-Mach'nes, of which the following is a specification.

The present nvention refersto a printing machine for producing prints of small size more particularly for printing addresses on envelops and other small writings, such as bills, memorandums, cards, letters andv the like, In printing: machines of this class, the type plates are carried along in a known manner one after the other by a feeding devicejconsisting of endless chains with studsor tappets which pushlthe type mechanism alongup to the printing plates and further on until they are cast off. I

ihe object of the invention is to produce sharp and clean printings by a speedy oper-l ation. To obtain this object a peculiar c1rculating pressure roll is arranged in such manner; that it can move over the article to be printed, type plate, and thus produce the pr nt. Thispressure. roll has the elfect of bringing the paper in contact with every part of the set of types or of the type plate,so that a failure of any letters or parts of letters in printing is impossible and an equal and sharp print is produced, which is very distinct' and can be easily read, even if the ypes a e. sm

"To insure that the types are well printed on all parts of the type plate, the circulating pressure roll is so arranged, that its distance from the axis of revolution can beyieldingly reduced. Together with this pressure roll a circulating gripper is operated in such manner, that immediately after the print is carried out the paper or other article is caught hold of and thrown off. In order to prevent the paper being smutted by the ink ribbon the paper is raised by an automatically controlled frame when the paper is a g t by t pp In the drawings a machine is shown constructed according to this invention.

Figure 1 is a sectional elevation, Fig. 2 a cross section of the machine, Fig. 3 is a sectional plan of a device for raising the frame, nd 1. s a p an sho n he in bbon nltqmb'mat on w th the a ove named framethat 1, A GUST ERNST KARL when the latter is placed on the- In theconstruction shown the type plates ina reservoir or shaft b, which s'p le up. is arranged vertically and preferably removablyfat one end of the machine. Below this shaft there is the table c on which the type plates a can be moved along, by the.

aid of studs or tappets d, mounted on the;

endless chains d and engaging the edges of the plates at which projects laterally beyond the table 0. The chains d run over sprocket wheels r drums e'and which can be driven from a crank g,operatively connected with Patented Mar. 23, 19 15.

as I

a shaft h by the gears 9 and g Ont-he I shaft h there s a sprocket connected by a chain it with asprocket wheel mounted on v shaft 71. This tube surrounds the shaft k,

wheel h whichis" the tube or hollowwhich is journal'ed belowthe table 0 and is adapted to be connected with the hollow" shaft thy the clutch 70 At-one end the shaft lcca-rries a mutilated bevel gear is? adapted to engage a second bevel gear 70 mounted on a shaft Z, carrying the sprocket wheel Thus by rotating the crank g the shaft Z is rotated when-the clutch is is thrown into gear and the chains d are driven in the direction of the arrow A. A bracket m is fastened to the shaft h.

and at the free'end of the bracket two arms mare pivotally connected between which the pressure roll n-is journaled. A spring a surrounding the pivots n of the arms m tends to extend the arms m to bring them in line with the bracket m as shown in dotted lines in Fig. 2. In this position a stop m on one arm m? bears against the counter. stop m on the. bracket m. A gripper o made of resilient material such as steel is connected to thefree end of the bracket m for the purpose of casting lf the paper from the type plate when Above the type plate a, tion for printing, pressure roll 02 is an inking ribbon p and on printed. which is in posithe latter is placed the paper, envelop or the a On rotating the shaft 7ithe pressure roll at revolves about the axis like to be printed.

of the shaft and when it comes into its lower position it strikes the paper to be printed and rolls thereon with a suitable pressure, the. arms m being turnedto afcertain-angle withres pect to the bracket m. \Vhen the print is V finished the articleprinted is re: by he r p As shown in Fig.

t e iPpe hears-Qn he r- 5 a s t the and in the path of the position of the gripper is so controlled by the roll that it will not come into contact with the printed article until the roll has passedover the printing plate. As the arms m are extended by the spring 12., as above described, the gripper 0, which extends beyond the roll a, will come into engagement with the printed article, and to prevent smutting, said article is raised from the plate immediately after the roll has passed over the latter as will be hereinafter described. Evidently the type plate should not be moved during printing and therefore the movement of the chains (Z must be intermittent. To enable this, the bevel gear [1: on the shaft is mutilated as before stated, so

that the shaft Z is only rotated, when the toothed part of the gear it engages the gear 70 Should it be desired to make a number of prints from the type plate lying in the path of the pressure roll 12. the chains d must be stopped altogether and for this purpose the clutch I0 is provided, which will be thrown out of gear when several prints are to made from the same type plate.

The type plate after being used in the manner described above will be moved farther on by the chains d and finally cast on. to the sloping guide plate 9, which leads the type plates to a gathering shaft or tube 6 To secure a proper piling up of the type plates in this tube care is taken to give the type plates the same amount of drop. For this purpose a movable carrier plate 1' is provided which projects into the shaft b which is openon one side. The carrier plate 1 is fastened to a chain 8 running over two sprocket wheels .9 which may be driven by any convenient means for instance by a worm wheel 6 carried by the upper sprocket wheel and a worm 25 fastened to the shaft is. Theinumber of teeth of this gearing is so chosen, that on each movement of the chains d the carrier plate 1 is moved downward the thickness of one type plate.

At the place where the printing is carried on, a frame u is arranged in openings u provided in the table a. This frame u is carried by vertical rods Q1 and held by spiral springs to in its normal position, that is to say in such a. position, that the upper side of the frame slightly projects above the printing surface of the types. In this position the frame u prevents the printed paper from being pressed against the ink ribbon by the gripper 0 and thus from being smutted. The springs 10 yield under the pressure of the pressure roll a.

During the movement of the type plates along the table the frame must be in its lower position. To carry out this lowering, the rods '0 at their lower end are connected witha cross bar :0, which is engaged by a Wedge shaped slide y, guided on a plate g attached below the table 0. By a lever system 3 the slide 2 is in operative connection with a block or roller y which is engaged by a cam 2, fixed on the tube 2'. Thus by rotating the tube a the roller 3 will be moved in longitudinal direction with respect to the shaft is and the slide 1 will be reciprocated correspondingly. The shape of the cam 2 is such that the frame a will be held below the table 0 during the movement of the chains (1. The ink ribbon 72 is fastened in usual manner to two rollers 1 and 2, which may be rotated in any known manner to wind the ink ribbon from one roller to the other. The means for guiding and operating the ink ribbon are so well known, that it is unnecessary to illustrate them.

i The use of the circulating pressure roller 92, has the advantage that the printing is executed very quickly and that every type is printed with sharp and distinct lines.

I claim:

1. In a printing machine, a type plate support, an extensible carrier revoluble in a vertical plane transversely to the support, a pressure roll mounted in the carrier, means on the latter to yieldingly press'the roll onto a type-plate mounted on the support, a. yielding paper support surrounding a type plate positioned below the carrier and adapted to be depressed by the roll, and a resilient member on' the carrier adapted to engage articles on the support.

2. In a printing machine, a type plate support, an extensible carrier revoluble in a vertical plane transversely to the support and having a spring actuated hinged end portion, a pressure roll rotatably mounted in the latter, a yielding paper support adapted to surround a type plate and depressible by the roller, a resilient arm mounted on the carrier and extending beyond the roller, and means to raise the support into the path of said arm.

3. A printing machine for minor printings having means for feeding type plates to a printing place, a pressure roll adapted to move in a circle and to roll over the paper to be printed when placed on the type plate, a shaft, a bracket mounted on the shaft, two arms rotatably attached to the bracket, and a spring adapted to hold the arms in a line with the bracket, the pressure roll being journaled between the said arms.

4. A printing machine for minor printings having means for feeding type plates to a printing place and a pressure roll adapted to move in a circle and to roll over the paper to be printed when placed on the type plate, a shaft, a bracket mounted on the shaft, two arms rotatably attached to the bracket, a spring adapted to hold the arms in a line with the bracket, the pressure roll being journaled between the said arms, and a gripper attached to the bracket and adapted to remove the printed material from the type plate when the pressure roller has passed over the same.

5. A. printing machine for minor printings having means for feeding type plates to a printing place, a pressure r011 adapted to move in a circle and to roll over the paper to be printed When placed on the type plate, a carrier arm for the pressure roll adapted 10 to yield during'the working of the roll, a

gripper attached to the'carrier arm, a frame adapted to embrace the type plate in its I FRANCIS R. STEWART.

Copies of thll patent may be obtained for five cents each, by addressing the commissioner of Patents,

- Washington, 17.0." 

